Table 3 Participants characteristics of health-risk behaviors trajectory groups
Characteristic | N | Health-risk behaviors trajectory groups | χ2 value | |||
|---|---|---|---|---|---|---|
Healthy group (n = 636) | Decreasing group (n = 107) | Increasing group (n = 222) | Unhealthy group (n = 77) | |||
Gender | 101.22b | |||||
Male | 397(38.1) | 189(47.6) | 65(16.4) | 81(20.4) | 62(15.6) | |
Female | 645(61.9) | 447(69.3) | 42(6.5) | 141(21.9) | 15(2.3) | |
Living place | 2.36 | |||||
Rural | 583(56.0) | 351(60.2) | 62(10.6) | 121(20.8) | 49(8.4) | |
Urban | 459(44.0) | 285(62.1) | 45(9.8) | 101(22.0) | 28(6.1) | |
Any siblings | 2.02 | |||||
Yes | 242(23.2) | 141(58.2) | 29(12.0) | 51(21.1) | 21(8.7) | |
No | 800(76.8) | 495(61.9) | 78(9.8) | 171(21.3) | 56(7.0) | |
Self-reported academic performance | 26.60b | |||||
Low | 220(21.1) | 115(52.3) | 34(15.5) | 48(21.8) | 23(10.4) | |
Medium | 644(61.8) | 389(60.4) | 64(9.9) | 143(22.2) | 48(7.5) | |
high | 178(17.1) | 132(74.2) | 9(5.0) | 31(17.4) | 6(3.4) | |
Self-reported family economy | 12.68a | |||||
Low | 254(24.4) | 149(58.7) | 29(11.4) | 50(19.7) | 26(10.2) | |
Medium | 736(70.6) | 451(61.3) | 77(10.5) | 163(22.1) | 45(6.1) | |
high | 52(5.0) | 36(69.2) | 1(1.9) | 9(17.3) | 6(11.6) | |
Father’s education level | 13.74a | |||||
Primary school and below | 239(22.9) | 131(54.8) | 25(10.5) | 55(23.0) | 28(11.7) | |
Middle school | 500(48.0) | 311(62.2) | 57(11.4) | 106(21.2) | 26(5.2) | |
Senior high school and above | 303(29.1) | 194(64.0) | 25(8.3) | 61(20.1) | 23(7.6) | |
Mother’s education level | 8.49 | |||||
Primary school and below | 457(43.9) | 265(58.0) | 47(10.3) | 112(24.5) | 33(7.2) | |
Middle school | 366(35.1) | 231(63.1) | 34(9.3) | 76(20.8) | 25(6.8) | |
Senior high school and above | 219(21.0) | 140(63.9) | 26(11.9) | 34(15.5) | 19(8.7) | |
Chronotype | 32.89b | |||||
M-type | 195(18.7) | 121(62.1) | 27(13.8) | 35(17.9) | 12(6.2) | |
N-type | 742(71.2) | 475(64.0) | 60(8.1) | 154(20.8) | 53(7.1) | |
E-type | 105(10.1) | 40(38.1) | 20(19.1) | 33(31.4) | 12(11.4) | |
Sleep duration | 54.99b | |||||
Short sleep | 370(35.5) | 211(57.0) | 36(9.7) | 94(25.5) | 29(7.8) | |
Normal sleep | 596(57.2) | 391(65.6) | 55(9.2) | 120(20.1) | 30(5.1) | |
Long sleep | 76(7.3) | 34(44.7) | 16(21.1) | 8(10.5) | 18(23.7) | |